Filamentous fungi - review and Oomycetes. Lecture 3. Four phyla of fungi. Chytridiomycota - no sexual spore Zygomycota - zygospore Ascomycota - ascospore Basidiomycota - basidiospore. Ascomycota. Botrytis cinerea - a fungus -causes grey mold. Powdery mildew of cucumber.
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Darkened vascular tissue of cucumber caused by F. ox. f.sp. cucumerinum
Wilt of field grown melon caused by F. ox. formae speciales melonis
Oospore and sporangia
Amphigyne two-celled antheridia
Photo: Christer Olsson
Phytophthora ramorum, chlamydospores. (Diameter 20 – 90 µm, 52.5 – 75 µm on this slide). Often germinating with a sporangiophore.
Isolat CH 180, (CBS 101328; P1357), The Netherlands, Rhododendron.
Christer Olsson, 1/7 2002, DIA bilder